./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/wc-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/wc-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f341eaff5b8d59d4b432d28ef9496964fb23f130f25d76d129a608308250bd30 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:52:46,733 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:52:46,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-12-02 13:52:46,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:52:46,800 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:52:46,823 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:52:46,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:52:46,824 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:52:46,824 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:52:46,825 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:52:46,825 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:52:46,826 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:52:46,826 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:52:46,827 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:52:46,827 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:52:46,828 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:52:46,828 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:52:46,829 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:52:46,829 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:52:46,830 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:52:46,831 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:52:46,831 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:52:46,832 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:52:46,833 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:52:46,833 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:52:46,833 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:52:46,834 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:52:46,834 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:52:46,835 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:52:46,835 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-12-02 13:52:46,835 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:52:46,836 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:52:46,836 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:52:46,836 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:52:46,837 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:52:46,837 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:52:46,837 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:52:46,837 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:52:46,837 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:52:46,838 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:52:46,838 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:52:46,838 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:52:46,838 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:52:46,838 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:52:46,839 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:52:46,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:52:46,839 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f341eaff5b8d59d4b432d28ef9496964fb23f130f25d76d129a608308250bd30 [2023-12-02 13:52:47,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:52:47,060 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:52:47,062 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:52:47,064 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:52:47,064 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:52:47,065 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/busybox-1.22.0/wc-2.i [2023-12-02 13:52:49,763 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:52:50,151 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:52:50,151 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/sv-benchmarks/c/busybox-1.22.0/wc-2.i [2023-12-02 13:52:50,181 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/data/e68330ca3/eb78815fd651460f9b035d0ff03bc546/FLAGfa68609f1 [2023-12-02 13:52:50,195 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/data/e68330ca3/eb78815fd651460f9b035d0ff03bc546 [2023-12-02 13:52:50,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:52:50,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:52:50,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:52:50,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:52:50,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:52:50,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:52:50" (1/1) ... [2023-12-02 13:52:50,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c7ef6ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:50, skipping insertion in model container [2023-12-02 13:52:50,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:52:50" (1/1) ... [2023-12-02 13:52:50,275 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:52:51,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:52:51,446 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:52:51,591 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:52:51,807 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:51,807 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:51,807 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:51,808 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:51,808 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:51,808 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:51,808 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:51,808 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:52:51,816 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:52:51,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51 WrapperNode [2023-12-02 13:52:51,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:52:51,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:52:51,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:52:51,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:52:51,825 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:51,872 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:51,947 INFO L138 Inliner]: procedures = 577, calls = 489, calls flagged for inlining = 31, calls inlined = 29, statements flattened = 1940 [2023-12-02 13:52:51,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:52:51,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:52:51,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:52:51,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:52:51,958 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:51,958 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:51,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:51,973 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:52,025 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:52,040 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:52,053 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:52,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:52,078 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:52:52,079 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:52:52,079 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:52:52,079 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:52:52,080 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (1/1) ... [2023-12-02 13:52:52,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:52:52,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:52:52,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:52:52,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:52:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-12-02 13:52:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-12-02 13:52:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:52:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-12-02 13:52:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-12-02 13:52:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-12-02 13:52:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-12-02 13:52:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-12-02 13:52:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:52:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:52:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-12-02 13:52:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:52:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:52:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:52:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:52:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-12-02 13:52:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-12-02 13:52:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-12-02 13:52:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-12-02 13:52:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-12-02 13:52:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-12-02 13:52:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-12-02 13:52:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-12-02 13:52:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-12-02 13:52:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 13:52:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 13:52:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:52:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:52:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:52:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:52:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-12-02 13:52:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:52:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-12-02 13:52:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:52:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-12-02 13:52:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-12-02 13:52:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-12-02 13:52:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:52:52,614 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:52:52,616 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:52:54,085 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:52:54,829 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:52:54,830 INFO L309 CfgBuilder]: Removed 29 assume(true) statements. [2023-12-02 13:52:54,831 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:52:54 BoogieIcfgContainer [2023-12-02 13:52:54,832 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:52:54,834 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:52:54,834 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:52:54,837 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:52:54,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:52:50" (1/3) ... [2023-12-02 13:52:54,838 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6616fa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:52:54, skipping insertion in model container [2023-12-02 13:52:54,838 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:52:51" (2/3) ... [2023-12-02 13:52:54,839 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6616fa87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:52:54, skipping insertion in model container [2023-12-02 13:52:54,839 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:52:54" (3/3) ... [2023-12-02 13:52:54,840 INFO L112 eAbstractionObserver]: Analyzing ICFG wc-2.i [2023-12-02 13:52:54,859 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:52:54,859 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2023-12-02 13:52:54,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:52:54,922 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2e17c9c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:52:54,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-12-02 13:52:54,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 293 states have (on average 1.713310580204778) internal successors, (502), 359 states have internal predecessors, (502), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-12-02 13:52:54,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-12-02 13:52:54,936 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:54,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-12-02 13:52:54,937 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:52:54,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:54,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1843670, now seen corresponding path program 1 times [2023-12-02 13:52:54,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:52:54,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399156396] [2023-12-02 13:52:54,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:54,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:52:55,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:55,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:52:55,312 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:52:55,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399156396] [2023-12-02 13:52:55,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399156396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:52:55,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:52:55,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:52:55,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786419750] [2023-12-02 13:52:55,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:52:55,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:52:55,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:52:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:52:55,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:52:55,345 INFO L87 Difference]: Start difference. First operand has 390 states, 293 states have (on average 1.713310580204778) internal successors, (502), 359 states have internal predecessors, (502), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:52:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:52:55,739 INFO L93 Difference]: Finished difference Result 774 states and 1106 transitions. [2023-12-02 13:52:55,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:52:55,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-12-02 13:52:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:52:55,755 INFO L225 Difference]: With dead ends: 774 [2023-12-02 13:52:55,755 INFO L226 Difference]: Without dead ends: 386 [2023-12-02 13:52:55,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:52:55,765 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1 mSDsluCounter, 436 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:52:55,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 874 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:52:55,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-12-02 13:52:55,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-12-02 13:52:55,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 291 states have (on average 1.6219931271477663) internal successors, (472), 360 states have internal predecessors, (472), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:52:55,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 515 transitions. [2023-12-02 13:52:55,860 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 515 transitions. Word has length 3 [2023-12-02 13:52:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:52:55,860 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 515 transitions. [2023-12-02 13:52:55,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:52:55,861 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 515 transitions. [2023-12-02 13:52:55,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 13:52:55,862 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:55,862 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-12-02 13:52:55,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:52:55,863 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:52:55,863 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:55,863 INFO L85 PathProgramCache]: Analyzing trace with hash -909454485, now seen corresponding path program 1 times [2023-12-02 13:52:55,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:52:55,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851924011] [2023-12-02 13:52:55,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:55,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:52:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:56,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:52:56,031 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:52:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851924011] [2023-12-02 13:52:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851924011] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:52:56,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [503059253] [2023-12-02 13:52:56,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:56,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:52:56,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:52:56,036 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:52:56,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:52:56,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:56,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 444 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:52:56,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:52:56,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:52:56,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:52:56,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [503059253] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:52:56,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:52:56,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-12-02 13:52:56,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378477290] [2023-12-02 13:52:56,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:52:56,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:52:56,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:52:56,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:52:56,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:52:56,428 INFO L87 Difference]: Start difference. First operand 386 states and 515 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:52:56,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:52:56,756 INFO L93 Difference]: Finished difference Result 386 states and 515 transitions. [2023-12-02 13:52:56,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:52:56,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-12-02 13:52:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:52:56,760 INFO L225 Difference]: With dead ends: 386 [2023-12-02 13:52:56,760 INFO L226 Difference]: Without dead ends: 385 [2023-12-02 13:52:56,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:52:56,762 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 3 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:52:56,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 870 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:52:56,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-02 13:52:56,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 385. [2023-12-02 13:52:56,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 385 states, 291 states have (on average 1.6185567010309279) internal successors, (471), 359 states have internal predecessors, (471), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:52:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 385 states to 385 states and 514 transitions. [2023-12-02 13:52:56,785 INFO L78 Accepts]: Start accepts. Automaton has 385 states and 514 transitions. Word has length 6 [2023-12-02 13:52:56,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:52:56,786 INFO L495 AbstractCegarLoop]: Abstraction has 385 states and 514 transitions. [2023-12-02 13:52:56,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:52:56,786 INFO L276 IsEmpty]: Start isEmpty. Operand 385 states and 514 transitions. [2023-12-02 13:52:56,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 13:52:56,787 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:56,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-12-02 13:52:56,795 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:52:56,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-12-02 13:52:56,988 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:52:56,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:56,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1871682387, now seen corresponding path program 1 times [2023-12-02 13:52:56,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:52:56,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751299329] [2023-12-02 13:52:56,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:56,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:52:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:57,089 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:52:57,089 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:52:57,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751299329] [2023-12-02 13:52:57,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751299329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:52:57,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:52:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:52:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609341693] [2023-12-02 13:52:57,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:52:57,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:52:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:52:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:52:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:52:57,092 INFO L87 Difference]: Start difference. First operand 385 states and 514 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:52:57,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:52:57,390 INFO L93 Difference]: Finished difference Result 385 states and 514 transitions. [2023-12-02 13:52:57,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:52:57,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-12-02 13:52:57,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:52:57,394 INFO L225 Difference]: With dead ends: 385 [2023-12-02 13:52:57,394 INFO L226 Difference]: Without dead ends: 384 [2023-12-02 13:52:57,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:52:57,395 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 0 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:52:57,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 870 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:52:57,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2023-12-02 13:52:57,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 382. [2023-12-02 13:52:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 289 states have (on average 1.6193771626297577) internal successors, (468), 356 states have internal predecessors, (468), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:52:57,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 511 transitions. [2023-12-02 13:52:57,413 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 511 transitions. Word has length 7 [2023-12-02 13:52:57,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:52:57,413 INFO L495 AbstractCegarLoop]: Abstraction has 382 states and 511 transitions. [2023-12-02 13:52:57,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 13:52:57,414 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 511 transitions. [2023-12-02 13:52:57,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-12-02 13:52:57,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:57,414 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:52:57,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:52:57,415 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:52:57,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash 631808627, now seen corresponding path program 1 times [2023-12-02 13:52:57,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:52:57,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31030284] [2023-12-02 13:52:57,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:57,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:52:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:57,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:52:57,564 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:52:57,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31030284] [2023-12-02 13:52:57,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31030284] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:52:57,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110838012] [2023-12-02 13:52:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:57,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:52:57,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:52:57,566 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:52:57,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:52:57,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:57,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:52:57,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:52:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:52:57,882 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:52:57,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110838012] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:52:57,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:52:57,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 13:52:57,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396968037] [2023-12-02 13:52:57,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:52:57,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:52:57,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:52:57,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:52:57,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:52:57,885 INFO L87 Difference]: Start difference. First operand 382 states and 511 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:52:58,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:52:58,131 INFO L93 Difference]: Finished difference Result 382 states and 511 transitions. [2023-12-02 13:52:58,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:52:58,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2023-12-02 13:52:58,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:52:58,134 INFO L225 Difference]: With dead ends: 382 [2023-12-02 13:52:58,134 INFO L226 Difference]: Without dead ends: 380 [2023-12-02 13:52:58,134 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:52:58,135 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 352 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:52:58,136 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 551 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:52:58,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-02 13:52:58,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-12-02 13:52:58,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 289 states have (on average 1.6124567474048443) internal successors, (466), 354 states have internal predecessors, (466), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:52:58,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 509 transitions. [2023-12-02 13:52:58,153 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 509 transitions. Word has length 9 [2023-12-02 13:52:58,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:52:58,155 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 509 transitions. [2023-12-02 13:52:58,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:52:58,155 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 509 transitions. [2023-12-02 13:52:58,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 13:52:58,156 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:52:58,156 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:52:58,163 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:52:58,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-12-02 13:52:58,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:52:58,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:52:58,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1888768684, now seen corresponding path program 1 times [2023-12-02 13:52:58,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:52:58,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993964380] [2023-12-02 13:52:58,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:58,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:52:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:52:58,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:52:58,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993964380] [2023-12-02 13:52:58,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993964380] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:52:58,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855041967] [2023-12-02 13:52:58,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:52:58,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:52:58,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:52:58,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:52:58,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:52:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:52:58,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:52:58,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:52:58,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:52:58,842 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:52:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:52:58,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855041967] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:52:58,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [43330840] [2023-12-02 13:52:58,896 INFO L159 IcfgInterpreter]: Started Sifa with 10 locations of interest [2023-12-02 13:52:58,897 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:52:58,899 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:52:58,904 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:52:58,904 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:53:08,665 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-12-02 13:53:08,713 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:53:10,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [43330840] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:10,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:53:10,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [4, 3, 4] total 14 [2023-12-02 13:53:10,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27692152] [2023-12-02 13:53:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:10,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:53:10,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:53:10,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 13:53:10,145 INFO L87 Difference]: Start difference. First operand 380 states and 509 transitions. Second operand has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:12,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:12,553 INFO L93 Difference]: Finished difference Result 382 states and 510 transitions. [2023-12-02 13:53:12,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:53:12,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2023-12-02 13:53:12,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:12,556 INFO L225 Difference]: With dead ends: 382 [2023-12-02 13:53:12,556 INFO L226 Difference]: Without dead ends: 380 [2023-12-02 13:53:12,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-12-02 13:53:12,558 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 5 mSDsluCounter, 1829 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:12,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2255 Invalid, 768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-12-02 13:53:12,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-12-02 13:53:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 380. [2023-12-02 13:53:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 290 states have (on average 1.603448275862069) internal successors, (465), 353 states have internal predecessors, (465), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:12,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 508 transitions. [2023-12-02 13:53:12,578 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 508 transitions. Word has length 10 [2023-12-02 13:53:12,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:12,579 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 508 transitions. [2023-12-02 13:53:12,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 7 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 508 transitions. [2023-12-02 13:53:12,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 13:53:12,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:12,580 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:12,585 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:53:12,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:12,781 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:12,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 901389137, now seen corresponding path program 1 times [2023-12-02 13:53:12,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:12,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161182130] [2023-12-02 13:53:12,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:12,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:12,935 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:53:12,936 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:12,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161182130] [2023-12-02 13:53:12,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161182130] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:12,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543898522] [2023-12-02 13:53:12,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:12,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:12,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:12,938 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:12,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:53:13,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:13,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:53:13,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:13,276 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:53:13,277 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:53:13,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543898522] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:13,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:53:13,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 13:53:13,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858215647] [2023-12-02 13:53:13,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:13,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:13,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:13,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:13,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:13,279 INFO L87 Difference]: Start difference. First operand 380 states and 508 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:13,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:13,551 INFO L93 Difference]: Finished difference Result 380 states and 508 transitions. [2023-12-02 13:53:13,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:13,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 13:53:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:13,554 INFO L225 Difference]: With dead ends: 380 [2023-12-02 13:53:13,554 INFO L226 Difference]: Without dead ends: 379 [2023-12-02 13:53:13,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:13,555 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 7 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:13,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 851 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:53:13,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2023-12-02 13:53:13,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2023-12-02 13:53:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 290 states have (on average 1.6) internal successors, (464), 352 states have internal predecessors, (464), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 507 transitions. [2023-12-02 13:53:13,576 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 507 transitions. Word has length 15 [2023-12-02 13:53:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:13,576 INFO L495 AbstractCegarLoop]: Abstraction has 379 states and 507 transitions. [2023-12-02 13:53:13,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 507 transitions. [2023-12-02 13:53:13,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 13:53:13,577 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:13,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:13,583 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:53:13,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 13:53:13,778 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:13,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:13,778 INFO L85 PathProgramCache]: Analyzing trace with hash 901336800, now seen corresponding path program 1 times [2023-12-02 13:53:13,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:13,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615405812] [2023-12-02 13:53:13,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:13,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:13,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:13,923 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:53:13,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615405812] [2023-12-02 13:53:13,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615405812] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:13,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010056894] [2023-12-02 13:53:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:13,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:13,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:13,927 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:13,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:53:14,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:14,259 INFO L262 TraceCheckSpWp]: Trace formula consists of 562 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:53:14,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:14,269 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:53:14,270 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:53:14,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010056894] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:14,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:53:14,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 13:53:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312946589] [2023-12-02 13:53:14,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:14,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:14,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:14,272 INFO L87 Difference]: Start difference. First operand 379 states and 507 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:14,642 INFO L93 Difference]: Finished difference Result 379 states and 507 transitions. [2023-12-02 13:53:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:14,643 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2023-12-02 13:53:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:14,646 INFO L225 Difference]: With dead ends: 379 [2023-12-02 13:53:14,646 INFO L226 Difference]: Without dead ends: 378 [2023-12-02 13:53:14,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:14,647 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 2 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 855 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:14,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 855 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:53:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-12-02 13:53:14,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 378. [2023-12-02 13:53:14,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 290 states have (on average 1.596551724137931) internal successors, (463), 351 states have internal predecessors, (463), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:14,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 506 transitions. [2023-12-02 13:53:14,666 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 506 transitions. Word has length 15 [2023-12-02 13:53:14,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:14,667 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 506 transitions. [2023-12-02 13:53:14,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:14,667 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 506 transitions. [2023-12-02 13:53:14,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 13:53:14,667 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:14,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:14,674 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-12-02 13:53:14,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-12-02 13:53:14,868 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:14,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:14,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2121707432, now seen corresponding path program 1 times [2023-12-02 13:53:14,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:14,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102071643] [2023-12-02 13:53:14,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:14,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:53:15,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102071643] [2023-12-02 13:53:15,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102071643] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:15,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479748220] [2023-12-02 13:53:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:15,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:15,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:15,010 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:15,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-02 13:53:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:15,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:53:15,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:15,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:53:15,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:53:15,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479748220] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:15,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:53:15,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 13:53:15,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411009727] [2023-12-02 13:53:15,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:15,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:15,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:15,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:15,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:15,348 INFO L87 Difference]: Start difference. First operand 378 states and 506 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:15,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:15,615 INFO L93 Difference]: Finished difference Result 386 states and 516 transitions. [2023-12-02 13:53:15,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:15,615 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 13:53:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:15,618 INFO L225 Difference]: With dead ends: 386 [2023-12-02 13:53:15,618 INFO L226 Difference]: Without dead ends: 385 [2023-12-02 13:53:15,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:15,619 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 4 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:15,619 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 854 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:53:15,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2023-12-02 13:53:15,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 384. [2023-12-02 13:53:15,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 296 states have (on average 1.5945945945945945) internal successors, (472), 357 states have internal predecessors, (472), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 515 transitions. [2023-12-02 13:53:15,634 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 515 transitions. Word has length 16 [2023-12-02 13:53:15,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:15,634 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 515 transitions. [2023-12-02 13:53:15,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:15,634 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 515 transitions. [2023-12-02 13:53:15,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 13:53:15,635 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:15,635 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:15,648 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-02 13:53:15,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:15,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:15,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2123329888, now seen corresponding path program 1 times [2023-12-02 13:53:15,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:15,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077392548] [2023-12-02 13:53:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:15,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:53:15,970 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077392548] [2023-12-02 13:53:15,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077392548] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:15,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [156985477] [2023-12-02 13:53:15,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:15,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:15,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:15,972 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:15,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-02 13:53:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:16,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:53:16,295 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:16,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:53:16,302 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:53:16,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [156985477] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:16,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:53:16,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 13:53:16,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880445381] [2023-12-02 13:53:16,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:16,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:16,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:16,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:16,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:16,303 INFO L87 Difference]: Start difference. First operand 384 states and 515 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:16,598 INFO L93 Difference]: Finished difference Result 758 states and 1020 transitions. [2023-12-02 13:53:16,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:16,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 13:53:16,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:16,601 INFO L225 Difference]: With dead ends: 758 [2023-12-02 13:53:16,602 INFO L226 Difference]: Without dead ends: 390 [2023-12-02 13:53:16,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:16,603 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 0 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:16,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 856 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:53:16,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2023-12-02 13:53:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 390. [2023-12-02 13:53:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 302 states have (on average 1.5827814569536425) internal successors, (478), 363 states have internal predecessors, (478), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:16,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 521 transitions. [2023-12-02 13:53:16,624 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 521 transitions. Word has length 16 [2023-12-02 13:53:16,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:16,624 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 521 transitions. [2023-12-02 13:53:16,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:16,625 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 521 transitions. [2023-12-02 13:53:16,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-12-02 13:53:16,625 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:16,625 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:16,632 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-02 13:53:16,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-12-02 13:53:16,826 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:16,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:16,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2071589810, now seen corresponding path program 1 times [2023-12-02 13:53:16,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:16,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9066230] [2023-12-02 13:53:16,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:16,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:53:16,982 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:16,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9066230] [2023-12-02 13:53:16,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9066230] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:16,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616047903] [2023-12-02 13:53:16,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:16,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:16,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:16,984 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:16,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-02 13:53:17,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:17,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:53:17,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:17,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:53:17,400 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:53:17,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616047903] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:17,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:53:17,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 13:53:17,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347559349] [2023-12-02 13:53:17,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:17,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:17,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:17,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:17,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:17,402 INFO L87 Difference]: Start difference. First operand 390 states and 521 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:17,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:17,631 INFO L93 Difference]: Finished difference Result 392 states and 523 transitions. [2023-12-02 13:53:17,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:17,632 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2023-12-02 13:53:17,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:17,633 INFO L225 Difference]: With dead ends: 392 [2023-12-02 13:53:17,634 INFO L226 Difference]: Without dead ends: 391 [2023-12-02 13:53:17,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:17,634 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 258 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:17,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 619 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:53:17,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2023-12-02 13:53:17,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 389. [2023-12-02 13:53:17,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 389 states, 302 states have (on average 1.5794701986754967) internal successors, (477), 362 states have internal predecessors, (477), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:17,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 389 states to 389 states and 520 transitions. [2023-12-02 13:53:17,650 INFO L78 Accepts]: Start accepts. Automaton has 389 states and 520 transitions. Word has length 16 [2023-12-02 13:53:17,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:17,650 INFO L495 AbstractCegarLoop]: Abstraction has 389 states and 520 transitions. [2023-12-02 13:53:17,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:17,651 INFO L276 IsEmpty]: Start isEmpty. Operand 389 states and 520 transitions. [2023-12-02 13:53:17,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 13:53:17,652 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:17,652 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:17,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-02 13:53:17,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-02 13:53:17,852 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:17,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:17,853 INFO L85 PathProgramCache]: Analyzing trace with hash 205225802, now seen corresponding path program 1 times [2023-12-02 13:53:17,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:17,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655400543] [2023-12-02 13:53:17,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:17,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:18,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:53:18,028 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:18,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655400543] [2023-12-02 13:53:18,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655400543] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:18,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051414958] [2023-12-02 13:53:18,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:18,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:18,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:18,030 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:18,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-02 13:53:18,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:18,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 649 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:53:18,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:18,419 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-02 13:53:18,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:53:18,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051414958] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:18,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:53:18,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 13:53:18,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137752883] [2023-12-02 13:53:18,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:18,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:18,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:18,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:18,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:18,421 INFO L87 Difference]: Start difference. First operand 389 states and 520 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:18,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:18,711 INFO L93 Difference]: Finished difference Result 589 states and 800 transitions. [2023-12-02 13:53:18,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:18,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2023-12-02 13:53:18,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:18,715 INFO L225 Difference]: With dead ends: 589 [2023-12-02 13:53:18,715 INFO L226 Difference]: Without dead ends: 588 [2023-12-02 13:53:18,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:18,716 INFO L413 NwaCegarLoop]: 424 mSDtfsCounter, 256 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:18,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 843 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:53:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2023-12-02 13:53:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 393. [2023-12-02 13:53:18,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 306 states have (on average 1.5751633986928104) internal successors, (482), 366 states have internal predecessors, (482), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:18,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 525 transitions. [2023-12-02 13:53:18,739 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 525 transitions. Word has length 17 [2023-12-02 13:53:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:18,739 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 525 transitions. [2023-12-02 13:53:18,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:18,740 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 525 transitions. [2023-12-02 13:53:18,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-12-02 13:53:18,740 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:18,741 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:18,748 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-12-02 13:53:18,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-12-02 13:53:18,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:18,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:18,944 INFO L85 PathProgramCache]: Analyzing trace with hash 158018525, now seen corresponding path program 1 times [2023-12-02 13:53:18,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:18,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973169567] [2023-12-02 13:53:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:18,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:19,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-12-02 13:53:19,081 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:19,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973169567] [2023-12-02 13:53:19,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973169567] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:19,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1976550509] [2023-12-02 13:53:19,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:19,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:19,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:19,083 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:19,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-02 13:53:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:19,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:53:19,392 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:19,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-12-02 13:53:19,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:53:19,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1976550509] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:19,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:53:19,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-12-02 13:53:19,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429223584] [2023-12-02 13:53:19,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:19,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:19,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:19,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:19,400 INFO L87 Difference]: Start difference. First operand 393 states and 525 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:19,702 INFO L93 Difference]: Finished difference Result 393 states and 525 transitions. [2023-12-02 13:53:19,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:19,703 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 19 [2023-12-02 13:53:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:19,705 INFO L225 Difference]: With dead ends: 393 [2023-12-02 13:53:19,705 INFO L226 Difference]: Without dead ends: 392 [2023-12-02 13:53:19,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:53:19,706 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 0 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:19,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 853 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:53:19,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2023-12-02 13:53:19,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 388. [2023-12-02 13:53:19,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 302 states have (on average 1.576158940397351) internal successors, (476), 361 states have internal predecessors, (476), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:19,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 519 transitions. [2023-12-02 13:53:19,719 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 519 transitions. Word has length 19 [2023-12-02 13:53:19,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:19,719 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 519 transitions. [2023-12-02 13:53:19,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:19,720 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 519 transitions. [2023-12-02 13:53:19,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-12-02 13:53:19,720 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:19,720 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:19,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-12-02 13:53:19,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:19,921 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:19,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash 2035278225, now seen corresponding path program 1 times [2023-12-02 13:53:19,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:19,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705629892] [2023-12-02 13:53:19,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:19,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:20,041 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:53:20,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705629892] [2023-12-02 13:53:20,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705629892] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:20,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216289179] [2023-12-02 13:53:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:20,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:20,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:20,042 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:20,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-02 13:53:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:20,474 INFO L262 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:53:20,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:20,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:53:20,486 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:53:20,504 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-02 13:53:20,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216289179] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:53:20,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1602198293] [2023-12-02 13:53:20,507 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2023-12-02 13:53:20,507 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:53:20,508 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:53:20,508 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:53:20,508 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:53:29,584 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-12-02 13:53:29,616 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:53:33,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1602198293] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:33,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:53:33,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [4, 3, 4] total 16 [2023-12-02 13:53:33,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213159588] [2023-12-02 13:53:33,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:33,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-02 13:53:33,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:33,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-02 13:53:33,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-12-02 13:53:33,710 INFO L87 Difference]: Start difference. First operand 388 states and 519 transitions. Second operand has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:40,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:40,118 INFO L93 Difference]: Finished difference Result 749 states and 1006 transitions. [2023-12-02 13:53:40,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-02 13:53:40,119 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-12-02 13:53:40,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:40,121 INFO L225 Difference]: With dead ends: 749 [2023-12-02 13:53:40,121 INFO L226 Difference]: Without dead ends: 388 [2023-12-02 13:53:40,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=49, Invalid=190, Unknown=1, NotChecked=0, Total=240 [2023-12-02 13:53:40,122 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 2 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 1423 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3072 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1423 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:40,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3072 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1423 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2023-12-02 13:53:40,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-12-02 13:53:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 388. [2023-12-02 13:53:40,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 302 states have (on average 1.5728476821192052) internal successors, (475), 361 states have internal predecessors, (475), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:53:40,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 518 transitions. [2023-12-02 13:53:40,137 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 518 transitions. Word has length 21 [2023-12-02 13:53:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:40,138 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 518 transitions. [2023-12-02 13:53:40,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 9 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:53:40,138 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 518 transitions. [2023-12-02 13:53:40,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 13:53:40,139 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:40,139 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:40,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-12-02 13:53:40,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:40,346 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:53:40,347 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1096554, now seen corresponding path program 1 times [2023-12-02 13:53:40,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:40,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579377424] [2023-12-02 13:53:40,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:40,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:53:40,490 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579377424] [2023-12-02 13:53:40,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579377424] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:53:40,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818024814] [2023-12-02 13:53:40,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:40,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:53:40,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:40,491 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:53:40,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-02 13:53:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:40,877 INFO L262 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:53:40,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:53:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:53:40,888 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:53:40,905 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-12-02 13:53:40,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818024814] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:53:40,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1039318138] [2023-12-02 13:53:40,907 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 13:53:40,907 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:53:40,908 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:53:40,908 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:53:40,908 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:53:57,509 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-12-02 13:53:57,537 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:53:59,591 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14443#(<= 2147483647 |ULTIMATE.start_main_~i~5#1|)' at error location [2023-12-02 13:53:59,591 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:53:59,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:53:59,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-12-02 13:53:59,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94940457] [2023-12-02 13:53:59,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:53:59,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-02 13:53:59,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:59,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-02 13:53:59,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-02 13:53:59,593 INFO L87 Difference]: Start difference. First operand 388 states and 518 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:54:00,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:00,111 INFO L93 Difference]: Finished difference Result 780 states and 1042 transitions. [2023-12-02 13:54:00,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 13:54:00,112 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2023-12-02 13:54:00,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:00,114 INFO L225 Difference]: With dead ends: 780 [2023-12-02 13:54:00,114 INFO L226 Difference]: Without dead ends: 397 [2023-12-02 13:54:00,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2023-12-02 13:54:00,116 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 4 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:00,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2135 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:54:00,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-12-02 13:54:00,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 397. [2023-12-02 13:54:00,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 311 states have (on average 1.5562700964630225) internal successors, (484), 370 states have internal predecessors, (484), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:54:00,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 527 transitions. [2023-12-02 13:54:00,140 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 527 transitions. Word has length 26 [2023-12-02 13:54:00,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:00,140 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 527 transitions. [2023-12-02 13:54:00,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:54:00,140 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 527 transitions. [2023-12-02 13:54:00,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-12-02 13:54:00,141 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:00,141 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:54:00,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-12-02 13:54:00,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:54:00,344 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:54:00,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1939955903, now seen corresponding path program 2 times [2023-12-02 13:54:00,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:00,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205135409] [2023-12-02 13:54:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:00,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:00,502 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 13:54:00,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205135409] [2023-12-02 13:54:00,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205135409] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:54:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022036912] [2023-12-02 13:54:00,502 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:54:00,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:54:00,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:54:00,503 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:54:00,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-02 13:54:00,870 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-12-02 13:54:00,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:54:00,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:54:00,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:54:00,906 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 13:54:00,906 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:54:00,941 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-12-02 13:54:00,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022036912] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:54:00,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [161933775] [2023-12-02 13:54:00,943 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2023-12-02 13:54:00,944 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:54:00,944 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:54:00,944 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:54:00,944 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:54:18,398 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 57 for LOIs [2023-12-02 13:54:18,405 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:54:22,228 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '16059#(<= 2147483647 |ULTIMATE.start_main_~i~5#1|)' at error location [2023-12-02 13:54:22,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:54:22,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:54:22,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-12-02 13:54:22,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842065539] [2023-12-02 13:54:22,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:54:22,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 13:54:22,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:22,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 13:54:22,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=323, Unknown=2, NotChecked=0, Total=380 [2023-12-02 13:54:22,231 INFO L87 Difference]: Start difference. First operand 397 states and 527 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:54:22,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:22,801 INFO L93 Difference]: Finished difference Result 777 states and 1038 transitions. [2023-12-02 13:54:22,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:54:22,802 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-12-02 13:54:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:22,805 INFO L225 Difference]: With dead ends: 777 [2023-12-02 13:54:22,805 INFO L226 Difference]: Without dead ends: 406 [2023-12-02 13:54:22,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=89, Invalid=459, Unknown=4, NotChecked=0, Total=552 [2023-12-02 13:54:22,807 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 337 mSDsluCounter, 1500 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:22,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 1918 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 13:54:22,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2023-12-02 13:54:22,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 393. [2023-12-02 13:54:22,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 308 states have (on average 1.5551948051948052) internal successors, (479), 366 states have internal predecessors, (479), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:54:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 522 transitions. [2023-12-02 13:54:22,832 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 522 transitions. Word has length 35 [2023-12-02 13:54:22,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:22,832 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 522 transitions. [2023-12-02 13:54:22,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:54:22,832 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 522 transitions. [2023-12-02 13:54:22,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-12-02 13:54:22,833 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:22,833 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:54:22,839 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-12-02 13:54:23,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-02 13:54:23,034 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:54:23,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:23,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1403601340, now seen corresponding path program 1 times [2023-12-02 13:54:23,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:23,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750071609] [2023-12-02 13:54:23,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:23,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:23,258 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-12-02 13:54:23,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:23,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750071609] [2023-12-02 13:54:23,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750071609] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:54:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597333838] [2023-12-02 13:54:23,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:23,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:54:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:54:23,260 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:54:23,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-02 13:54:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:23,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 13:54:23,740 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:54:23,778 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:54:23,778 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:54:23,836 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-12-02 13:54:23,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597333838] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:54:23,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [733845192] [2023-12-02 13:54:23,838 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 13:54:23,838 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:54:23,839 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:54:23,839 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:54:23,839 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:54:44,838 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-12-02 13:54:44,868 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:54:47,636 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '17708#(and (= |ULTIMATE.start___main_#t~varargs207#1.offset| 0) (= |ULTIMATE.start___main_~start_fmt~0#1.base| 11) (= |ULTIMATE.start___main_~start_fmt~0#1.offset| 1) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (= |ULTIMATE.start___main_~status~0#1| 0) (= |ULTIMATE.start___main_~fname_fmt~0#1.base| 12) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (= |ULTIMATE.start___main_~#counts~0#1.offset| 0) (<= 2147483647 |ULTIMATE.start_getopt32_~argc~0#1|) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 13) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (= |ULTIMATE.start___main_~#totals~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 13) (= |ULTIMATE.start_getopt32_~requires~0#1| 0) (= |ULTIMATE.start___main_~fname_fmt~0#1.offset| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0))))' at error location [2023-12-02 13:54:47,636 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:54:47,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:54:47,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-12-02 13:54:47,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831757585] [2023-12-02 13:54:47,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:54:47,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-02 13:54:47,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:47,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-02 13:54:47,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2023-12-02 13:54:47,638 INFO L87 Difference]: Start difference. First operand 393 states and 522 transitions. Second operand has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 13:54:48,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:48,353 INFO L93 Difference]: Finished difference Result 1184 states and 1607 transitions. [2023-12-02 13:54:48,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 13:54:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 40 [2023-12-02 13:54:48,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:48,357 INFO L225 Difference]: With dead ends: 1184 [2023-12-02 13:54:48,357 INFO L226 Difference]: Without dead ends: 805 [2023-12-02 13:54:48,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2023-12-02 13:54:48,359 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 516 mSDsluCounter, 2085 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:48,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [530 Valid, 2504 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:54:48,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-12-02 13:54:48,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 415. [2023-12-02 13:54:48,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 330 states have (on average 1.5212121212121212) internal successors, (502), 388 states have internal predecessors, (502), 24 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-12-02 13:54:48,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 545 transitions. [2023-12-02 13:54:48,392 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 545 transitions. Word has length 40 [2023-12-02 13:54:48,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:48,392 INFO L495 AbstractCegarLoop]: Abstraction has 415 states and 545 transitions. [2023-12-02 13:54:48,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.142857142857143) internal successors, (72), 14 states have internal predecessors, (72), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 13:54:48,392 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 545 transitions. [2023-12-02 13:54:48,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 13:54:48,393 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:48,393 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:54:48,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-02 13:54:48,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-12-02 13:54:48,594 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:54:48,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:48,594 INFO L85 PathProgramCache]: Analyzing trace with hash 851163276, now seen corresponding path program 1 times [2023-12-02 13:54:48,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:48,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134481088] [2023-12-02 13:54:48,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:48,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:48,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:48,829 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 13:54:48,830 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:48,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134481088] [2023-12-02 13:54:48,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134481088] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:48,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:48,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:54:48,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21112792] [2023-12-02 13:54:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:48,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:54:48,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:54:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:48,832 INFO L87 Difference]: Start difference. First operand 415 states and 545 transitions. Second operand has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:54:49,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:49,231 INFO L93 Difference]: Finished difference Result 829 states and 1109 transitions. [2023-12-02 13:54:49,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:54:49,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2023-12-02 13:54:49,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:49,235 INFO L225 Difference]: With dead ends: 829 [2023-12-02 13:54:49,235 INFO L226 Difference]: Without dead ends: 495 [2023-12-02 13:54:49,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:49,237 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 91 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:49,237 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 803 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:54:49,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2023-12-02 13:54:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 452. [2023-12-02 13:54:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 366 states have (on average 1.5081967213114753) internal successors, (552), 424 states have internal predecessors, (552), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:54:49,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 597 transitions. [2023-12-02 13:54:49,263 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 597 transitions. Word has length 62 [2023-12-02 13:54:49,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:49,263 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 597 transitions. [2023-12-02 13:54:49,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:54:49,264 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 597 transitions. [2023-12-02 13:54:49,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-12-02 13:54:49,264 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:49,265 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:54:49,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-02 13:54:49,265 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:54:49,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:49,265 INFO L85 PathProgramCache]: Analyzing trace with hash 616304087, now seen corresponding path program 1 times [2023-12-02 13:54:49,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:49,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617849315] [2023-12-02 13:54:49,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:49,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:49,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:49,570 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 13:54:49,570 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:49,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617849315] [2023-12-02 13:54:49,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617849315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:49,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:49,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:54:49,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17557868] [2023-12-02 13:54:49,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:49,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:54:49,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:49,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:54:49,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:54:49,572 INFO L87 Difference]: Start difference. First operand 452 states and 597 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:54:50,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:50,024 INFO L93 Difference]: Finished difference Result 495 states and 651 transitions. [2023-12-02 13:54:50,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:54:50,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 63 [2023-12-02 13:54:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:50,027 INFO L225 Difference]: With dead ends: 495 [2023-12-02 13:54:50,027 INFO L226 Difference]: Without dead ends: 493 [2023-12-02 13:54:50,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:54:50,028 INFO L413 NwaCegarLoop]: 421 mSDtfsCounter, 90 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:50,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 1220 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:54:50,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2023-12-02 13:54:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 452. [2023-12-02 13:54:50,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 366 states have (on average 1.5027322404371584) internal successors, (550), 424 states have internal predecessors, (550), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:54:50,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 595 transitions. [2023-12-02 13:54:50,050 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 595 transitions. Word has length 63 [2023-12-02 13:54:50,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:50,050 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 595 transitions. [2023-12-02 13:54:50,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 4 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 13:54:50,051 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 595 transitions. [2023-12-02 13:54:50,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 13:54:50,051 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:50,051 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:54:50,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-02 13:54:50,052 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:54:50,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:50,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1079800853, now seen corresponding path program 2 times [2023-12-02 13:54:50,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:50,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009660028] [2023-12-02 13:54:50,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:50,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:50,279 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 13:54:50,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:50,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009660028] [2023-12-02 13:54:50,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009660028] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:54:50,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1183264816] [2023-12-02 13:54:50,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-02 13:54:50,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:54:50,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:54:50,283 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:54:50,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-02 13:54:52,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-02 13:54:52,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:54:52,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:54:52,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:54:52,407 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 13:54:52,407 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:54:52,443 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 13:54:52,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1183264816] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:54:52,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [232104588] [2023-12-02 13:54:52,446 INFO L159 IcfgInterpreter]: Started Sifa with 22 locations of interest [2023-12-02 13:54:52,446 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:54:52,446 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:54:52,446 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:54:52,446 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:55:17,244 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-12-02 13:55:17,272 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:55:19,940 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22623#(and (= |ULTIMATE.start___main_#t~varargs207#1.offset| 0) (= |ULTIMATE.start___main_~start_fmt~0#1.base| 11) (= |ULTIMATE.start___main_~start_fmt~0#1.offset| 1) (= 0 (+ |ULTIMATE.start_getopt32_~max_arg~0#1| 1)) (= |ULTIMATE.start_getopt32_~spec_flgs~0#1| 0) (= |ULTIMATE.start___main_~status~0#1| 0) (= |ULTIMATE.start___main_~fname_fmt~0#1.base| 12) (= |ULTIMATE.start_getopt32_~flags~0#1| 0) (= |ULTIMATE.start___main_~#counts~0#1.offset| 0) (<= 2147483647 |ULTIMATE.start_getopt32_~argc~0#1|) (= |ULTIMATE.start_getopt32_#varArgs#1.offset| 0) (= |ULTIMATE.start_getopt32_#in~applet_opts#1.base| 13) (= |ULTIMATE.start_getopt32_~min_arg~0#1| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.offset| 0) (= 0 |ULTIMATE.start_getopt32_#in~applet_opts#1.offset|) (= |ULTIMATE.start___main_~#totals~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~#complementary~0#1.offset| 0) (= |ULTIMATE.start_getopt32_~applet_opts#1.base| 13) (= |ULTIMATE.start_getopt32_~requires~0#1| 0) (= |ULTIMATE.start___main_~fname_fmt~0#1.offset| 0) (or (not (= (select (select |#memory_$Pointer$.offset| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0)) (not (= (select (select |#memory_$Pointer$.base| |ULTIMATE.start_getopt32_~argv#1.base|) (+ |ULTIMATE.start_getopt32_~argv#1.offset| (* 8 |ULTIMATE.start_getopt32_~argc~0#1|))) 0))))' at error location [2023-12-02 13:55:19,940 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2023-12-02 13:55:19,940 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:55:19,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-12-02 13:55:19,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119613210] [2023-12-02 13:55:19,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 13:55:19,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-02 13:55:19,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:55:19,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-02 13:55:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2023-12-02 13:55:19,942 INFO L87 Difference]: Start difference. First operand 452 states and 595 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:55:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:55:20,737 INFO L93 Difference]: Finished difference Result 1861 states and 2563 transitions. [2023-12-02 13:55:20,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:55:20,738 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 62 [2023-12-02 13:55:20,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:55:20,748 INFO L225 Difference]: With dead ends: 1861 [2023-12-02 13:55:20,748 INFO L226 Difference]: Without dead ends: 1860 [2023-12-02 13:55:20,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 209 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2023-12-02 13:55:20,749 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 2285 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2327 SdHoareTripleChecker+Valid, 2739 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:55:20,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2327 Valid, 2739 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-02 13:55:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1860 states. [2023-12-02 13:55:20,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1860 to 468. [2023-12-02 13:55:20,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 382 states have (on average 1.4921465968586387) internal successors, (570), 440 states have internal predecessors, (570), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:55:20,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 615 transitions. [2023-12-02 13:55:20,795 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 615 transitions. Word has length 62 [2023-12-02 13:55:20,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:55:20,795 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 615 transitions. [2023-12-02 13:55:20,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 9 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 13:55:20,796 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 615 transitions. [2023-12-02 13:55:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 13:55:20,797 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:55:20,797 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:55:20,807 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-12-02 13:55:20,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:55:20,998 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:55:20,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:55:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1886684566, now seen corresponding path program 1 times [2023-12-02 13:55:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:55:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230492125] [2023-12-02 13:55:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:55:20,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:55:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:55:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2023-12-02 13:55:21,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:55:21,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230492125] [2023-12-02 13:55:21,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230492125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:55:21,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:55:21,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:55:21,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754394512] [2023-12-02 13:55:21,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:55:21,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:55:21,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:55:21,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:55:21,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:55:21,175 INFO L87 Difference]: Start difference. First operand 468 states and 615 transitions. Second operand has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:55:21,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:55:21,609 INFO L93 Difference]: Finished difference Result 819 states and 1102 transitions. [2023-12-02 13:55:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:55:21,610 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-12-02 13:55:21,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:55:21,613 INFO L225 Difference]: With dead ends: 819 [2023-12-02 13:55:21,613 INFO L226 Difference]: Without dead ends: 519 [2023-12-02 13:55:21,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:55:21,615 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 76 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-02 13:55:21,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 853 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-02 13:55:21,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2023-12-02 13:55:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 470. [2023-12-02 13:55:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 386 states have (on average 1.4844559585492227) internal successors, (573), 442 states have internal predecessors, (573), 25 states have call successors, (25), 8 states have call predecessors, (25), 7 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-02 13:55:21,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 618 transitions. [2023-12-02 13:55:21,649 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 618 transitions. Word has length 70 [2023-12-02 13:55:21,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:55:21,650 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 618 transitions. [2023-12-02 13:55:21,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 18.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 13:55:21,650 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 618 transitions. [2023-12-02 13:55:21,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-12-02 13:55:21,651 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:55:21,651 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:55:21,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-02 13:55:21,651 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 13:55:21,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:55:21,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1887317057, now seen corresponding path program 1 times [2023-12-02 13:55:21,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:55:21,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247766341] [2023-12-02 13:55:21,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:55:21,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:55:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:55:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 13:55:21,959 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:55:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247766341] [2023-12-02 13:55:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247766341] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:55:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335656639] [2023-12-02 13:55:21,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:55:21,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:55:21,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:55:21,961 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:55:21,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-02 13:55:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:55:22,501 INFO L262 TraceCheckSpWp]: Trace formula consists of 980 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 13:55:22,504 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:55:22,522 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 13:55:22,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:55:22,559 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-12-02 13:55:22,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335656639] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:55:22,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1379538786] [2023-12-02 13:55:22,562 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 13:55:22,563 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:55:22,563 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:55:22,563 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:55:22,563 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:55:45,393 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-12-02 13:55:45,423 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 548 for LOIs [2023-12-02 13:55:45,998 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:57:10,212 WARN L293 SmtUtils]: Spent 1.35m on a formula simplification. DAG size of input: 599 DAG size of output: 436 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:58:42,754 WARN L293 SmtUtils]: Spent 1.51m on a formula simplification. DAG size of input: 608 DAG size of output: 446 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:00:18,108 WARN L293 SmtUtils]: Spent 1.54m on a formula simplification. DAG size of input: 606 DAG size of output: 444 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:01:58,783 WARN L293 SmtUtils]: Spent 1.62m on a formula simplification. DAG size of input: 616 DAG size of output: 454 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:03:33,940 WARN L293 SmtUtils]: Spent 1.53m on a formula simplification. DAG size of input: 548 DAG size of output: 384 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:05:15,185 WARN L293 SmtUtils]: Spent 1.62m on a formula simplification. DAG size of input: 550 DAG size of output: 386 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 14:05:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [1379538786] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:05:15,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:05:15,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [5, 5, 5] total 25 [2023-12-02 14:05:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765052805] [2023-12-02 14:05:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:05:15,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-02 14:05:15,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 14:05:15,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-02 14:05:15,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=514, Unknown=5, NotChecked=0, Total=600 [2023-12-02 14:05:15,189 INFO L87 Difference]: Start difference. First operand 470 states and 618 transitions. Second operand has 19 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:05:18,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 14:05:51,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:05:51,776 INFO L93 Difference]: Finished difference Result 863 states and 1151 transitions. [2023-12-02 14:05:51,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-02 14:05:51,777 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 70 [2023-12-02 14:05:51,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:05:51,782 INFO L225 Difference]: With dead ends: 863 [2023-12-02 14:05:51,782 INFO L226 Difference]: Without dead ends: 474 [2023-12-02 14:05:51,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 182 SyntacticMatches, 12 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 569.9s TimeCoverageRelationStatistics Valid=99, Invalid=652, Unknown=5, NotChecked=0, Total=756 [2023-12-02 14:05:51,784 INFO L413 NwaCegarLoop]: 408 mSDtfsCounter, 14 mSDsluCounter, 5310 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 5718 SdHoareTripleChecker+Invalid, 2727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.7s IncrementalHoareTripleChecker+Time [2023-12-02 14:05:51,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 5718 Invalid, 2727 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 2719 Invalid, 5 Unknown, 0 Unchecked, 35.7s Time] [2023-12-02 14:05:51,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-12-02 14:05:51,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2023-12-02 14:05:51,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 389 states have (on average 1.480719794344473) internal successors, (576), 445 states have internal predecessors, (576), 26 states have call successors, (26), 9 states have call predecessors, (26), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2023-12-02 14:05:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 623 transitions. [2023-12-02 14:05:51,832 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 623 transitions. Word has length 70 [2023-12-02 14:05:51,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:05:51,832 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 623 transitions. [2023-12-02 14:05:51,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 2.25) internal successors, (36), 17 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:05:51,833 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 623 transitions. [2023-12-02 14:05:51,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-12-02 14:05:51,834 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:05:51,834 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:05:51,842 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-02 14:05:52,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-12-02 14:05:52,034 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2023-12-02 14:05:52,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:05:52,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1469676320, now seen corresponding path program 1 times [2023-12-02 14:05:52,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 14:05:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748116653] [2023-12-02 14:05:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:05:52,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 14:05:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:05:52,258 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-02 14:05:52,258 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 14:05:52,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748116653] [2023-12-02 14:05:52,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748116653] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:05:52,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646991891] [2023-12-02 14:05:52,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:05:52,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:05:52,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:05:52,260 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:05:52,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2e1c1ca8-39c5-4be3-abff-91c94ab80a02/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-02 14:05:52,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:05:52,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 995 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:05:52,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:05:52,911 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-02 14:05:52,911 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:05:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-12-02 14:05:52,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646991891] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:05:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1404874856] [2023-12-02 14:05:52,943 INFO L159 IcfgInterpreter]: Started Sifa with 38 locations of interest [2023-12-02 14:05:52,943 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 14:05:52,943 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 14:05:52,944 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 14:05:52,944 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 14:06:46,405 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 121 for LOIs [2023-12-02 14:06:46,435 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.C_memset with input of size 548 for LOIs [2023-12-02 14:06:49,846 INFO L180 IcfgInterpreter]: Interpretation finished